CH675188A5 - - Google Patents
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- Publication number
- CH675188A5 CH675188A5 CH859/89A CH85989A CH675188A5 CH 675188 A5 CH675188 A5 CH 675188A5 CH 859/89 A CH859/89 A CH 859/89A CH 85989 A CH85989 A CH 85989A CH 675188 A5 CH675188 A5 CH 675188A5
- Authority
- CH
- Switzerland
- Prior art keywords
- seeds
- distributor
- photocell
- distributors
- path
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/08—Broadcast seeders; Seeders depositing seeds in rows
- A01C7/10—Devices for adjusting the seed-box ; Regulation of machines for depositing quantities at intervals
- A01C7/102—Regulating or controlling the seed rate
- A01C7/105—Seed sensors
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/04—Single-grain seeders with or without suction devices
- A01C7/042—Single-grain seeders with or without suction devices using pneumatic means
- A01C7/044—Pneumatic seed wheels
- A01C7/046—Pneumatic seed wheels with perforated seeding discs
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C7/00—Sowing
- A01C7/20—Parts of seeders for conducting and depositing seed
- A01C7/201—Mounting of the seeding tools
- A01C7/203—Mounting of the seeding tools comprising depth regulation means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S111/00—Planting
- Y10S111/903—Monitor
- Y10S111/904—Population control function
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S111/00—Planting
- Y10S111/926—Special suspension or gauging feature
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental Sciences (AREA)
- Sowing (AREA)
- Pretreatment Of Seeds And Plants (AREA)
- Transplanting Machines (AREA)
Description
1 1
CH 675 188 A5 CH 675 188 A5
2 2
Descrizione Description
L'invenzione propone una seminatrice, pneumatica del tipo comprendente una pluralità di distributori a disco rotante azionati ciascuno da un proprio motore eletrico in cui sono previsti mezzi atti a rilevare la velocità di avanzamento della macchina e fornire una serie di impulsi, funzione della velocità di avanzamento, 3 mezzi elettronici atti ad agire su detti motori dei distributori. Più in particolare, si fa uso di mezzi elettronici per adeguare la velocità dei distributori alla velocità di avanzamento della macchina e per agire sui dispositivi che regolano la caduta dei semi, allo scopo di assicurarne la uniforme distribuzione nel terreno e una regolare profondità di semina. The invention proposes a pneumatic seed drill of the type comprising a plurality of rotating disk distributors each driven by its own electric motor in which means are provided for detecting the speed of advancement of the machine and supplying a series of pulses, a function of the speed of feed, 3 electronic means adapted to act on said distributor motors. More specifically, electronic means are used to adjust the speed of the distributors to the speed of advancement of the machine and to act on the devices that regulate the fall of the seeds, in order to ensure their uniform distribution in the ground and a regular sowing depth.
Sono note seminatrici pneumatiche sostanzialmente costituite da un contenitore suddiviso in due da un disco rotante che presenta, perimetralmente, una pluralità di fori. Pneumatic seed drills are known substantially consisting of a container divided in two by a rotating disc which has, on the perimeter, a plurality of holes.
Il disco rotante divide il contenitore in due scomparti uno dei quali funge da serbatoio dei semi, mentre l'altro costituisce una camera mantenuta in depressione da opportuni mezzi aspiranti. The rotating disk divides the container into two compartments, one of which acts as a seed tank, while the other constitutes a chamber maintained in depression by suitable suction means.
La depressione fa sì che i semi aderiscano ai fori presenti sul disco, il quale viene posto in rotazione attorno ad un asse orizzontale. The depression causes the seeds to adhere to the holes on the disc, which is rotated around a horizontal axis.
Durante il percorso, i fori passano in corrispondenza di una zona nella quale viene a mancare la depressione ed i semi possono così cadere sul terreno. During the journey, the holes pass in an area where there is no depression and the seeds can thus fall on the ground.
Nelle seminatrici note, i dischi dei distributori sono posti in rotazione, attraverso organi meccanici di trasmissione, dalle ruote della macchina. In known seeders, the disks of the distributors are rotated, through mechanical transmission organs, by the wheels of the machine.
Questo sistema presenta però alcuni limiti ed inconvenienti: innanzitutto la velocità di rotazione del distributore è legata a quella di avanzamento della macchina da un limitato numero di rapporto, fissi. However, this system has some limitations and drawbacks: first of all, the rotation speed of the vending machine is linked to that of the advancement of the machine by a limited number of fixed ratios.
Inoltre questo sistema costringe a costruire macchine meccanicamente complicate e assai pesanti, di costo elevato e che in caso di usura comportano notevoli oneri di manutenzione. Furthermore, this system forces the construction of mechanically complicated and very heavy machines, of high cost and which in case of wear involve considerable maintenance costs.
Per ovviare a questi inconvenienti la presente invenzione propone una seminatrice pneumatica del tipo comprendente una pluralità di distributori a disco rotante azionati ciascuno da un proprio motore elettrico in cui sono previsti mezzi atti a rilevare la velocità di avanzamento della macchina e fornire una serie di impulsi, funzione della velocità di avanzamento, a mezzi elettronici atti ad agire su detti motori dei distributori. To overcome these drawbacks, the present invention proposes a pneumatic seeder of the type comprising a plurality of rotary disc distributors each driven by its own electric motor in which means are provided for detecting the speed of advancement of the machine and supplying a series of pulses, function of the forward speed, to electronic means adapted to act on said distributor motors.
Questo ed altri scopi vengono raggiunti dalla seminatrice secondo l'invenzione, così come definita nella rivendicazione n. 1. La presente invenzione sarà ora descritta dettagliatamente, a titolo esemplificativo, con riferimento alle figure allegate in cui: This and other objects are achieved by the seeder according to the invention, as defined in claim n. 1. The present invention will now be described in detail, by way of example, with reference to the attached figures in which:
- la figura 1 illustra la vista prospettica, parziale, di una seminatrice secondo l'invenzione; - figure 1 illustrates the partial perspective view of a seeder according to the invention;
- la figura 2 illustra la vista laterale di una seminatrice secondo l'invenzione; - figure 2 shows the side view of a seeder according to the invention;
- la figura 3 illustra un particolare del distributore; - figure 3 shows a detail of the vending machine;
- la figura 4 è una sezione verticale del distributore in una seminatrice secondo l'invenzione. - figure 4 is a vertical section of the distributor in a seeder according to the invention.
La seminatrice secondo l'invenzione si compone di un telaio, non illustrato in figura, comprendente una traversa 1 sulla quale sono montati, con possibilità di essere bloccati in diverse posizioni, una pluralità di gruppi di semina uno dei quali, indicato con 2, è illustrato in figura. The seeder according to the invention consists of a frame, not shown in the figure, comprising a crosspiece 1 on which a plurality of sowing units are mounted, with the possibility of being blocked in different positions, one of which, indicated with 2, is illustrated in the figure.
Questi gruppi di semina comprendono ciascuno un supporto 3 montato sulla traversa 1, un braccio di sostegno 4 ed un distributore 5. Quest'ultimo è provvisto superiormente di una tramoggia 6 per l'introduzione dei semi da distribuire sul terreno ed è del tipo a disco rotante, quali quelli descritti in precedenza. These sowing units each comprise a support 3 mounted on the crosspiece 1, a support arm 4 and a distributor 5. The latter is provided above with a hopper 6 for the introduction of the seeds to be distributed on the ground and is of the disc type rotating, such as those described above.
Nel caso specifico, però, la rotazione del disco è comandata, attraverso un riduttore 7, ad esempio a coppia conica, da un motore 8 a corrente continua. In the specific case, however, the rotation of the disk is controlled, by means of a reduction gear 7, for example with a bevel gear, by a DC motor 8.
Il motore 8 è controllato, in modo noto, da una centralina elettronica 9 disposta in posizione facilmente accessibile all'operatore. The motor 8 is controlled, in a known way, by an electronic control unit 9 arranged in a position easily accessible to the operator.
In prossimità di un estremo della traversa 1 è anche fissato un supporto 10 di una ruota 11 che appoggia sul terreno e sul cui asse è montato un trasduttore di tipo noto, ad esempio un encoder 12, anch'esso collegato alla centralina 9. A support 10 of a wheel 11 which rests on the ground and on whose axis is mounted a transducer of a known type, for example an encoder 12, also connected to the control unit 9, is also fixed near one end of the crosspiece 1.
In seguito al movimento della ruota 11 dovuto all'avanzamento del mezzo, l'encoder 12 genera una serie di impulsi che vengono elaborati dalla centralina la quale, opportunamente programmata, adegua la velocità del motore 8 e di conseguenza quella del distributore, alla velocità di avanzamento del trattore. Following the movement of the wheel 11 due to the advancement of the vehicle, the encoder 12 generates a series of impulses which are processed by the control unit which, suitably programmed, adjusts the speed of the motor 8 and consequently that of the distributor, to the speed of advancement of the tractor.
In tal modo è possibile semplificare il sistema di trasmissione delle seminatrici, adeguare perfettamente il moto dei dischi distributori alla velocità del trattore senza soluzione di continuità, e rendere indipendente, se necessario, il moto rotatorio dei dischi dagli altri parametri, semplicemente escludendo il trasduttore 12 e comandando direttamente il funzionamento dei motori 8 tramite la centralina. In this way it is possible to simplify the transmission system of the seed drills, perfectly adapt the motion of the distributing discs to the speed of the tractor without interruption, and make the rotational motion of the discs independent of the other parameters, if necessary, simply by excluding the transducer 12 and directly controlling the operation of the motors 8 via the control unit.
I bracci 4 alla cui estremità sono montati i distributori sono incernierati ciascuno al relativo supporto 3 e soggetti all'azione di uno stantuffo oleodinamico 13 controllato, attraverso una elettrovalvola 14, da una seconda centralina elettronica 15 anch'essa disposta in prossimità dell'operatore. The arms 4 at the end of which the distributors are mounted are each hinged to the relative support 3 and subject to the action of a hydraulic piston 13 controlled, through a solenoid valve 14, by a second electronic control unit 15 which is also located near the operator.
Al gruppo di semina 2 è fissato un sonar 16 il cui circuito emette un'onda che viene riflessa dal terreno e che consente di misurare, in funzione del tempo intercorso fra l'emissione e la ricezione dell'onda, la distanza del sonar dalla superficie. To the seeding group 2 there is a sonar 16 whose circuit emits a wave which is reflected by the ground and which allows to measure, as a function of the time elapsed between the emission and the reception of the wave, the distance of the sonar from the surface .
In tal modo tramite il sonar 16 si può rilevare l'altezza dal terreno del sonar e, di conseguenza, quella del gruppo di semina, così da essere sempre a conoscenza, istante per istante, della profondità di semina. In this way, the sonar 16 can be used to determine the height of the sonar from the ground and, consequently, that of the sowing group, so as to always be aware, instant by instant, of the sowing depth.
Impostata all'inizio del lavoro la profondità di semina desiderata, alla quale corrisponde un determinato valore «P» delia distanza del sonar da terra, il sistema misura le variazioni di «P» e, quando queste fuoriescono da un certo intervallo di tolleranza, genera un segnale che viene elaborato dalla centralina 15 la quale, tramite l'elettrovalvola 14, aziona lo stantuffo 13 per aggiustare l'altezza del gruppo 2 e quindi la profondità di semina. Set at the beginning of the work, the desired sowing depth, which corresponds to a certain value "P" of the sonar distance from the ground, the system measures the variations of "P" and, when they come out from a certain tolerance range, generates a signal which is processed by the control unit 15 which, via the solenoid valve 14, actuates the piston 13 to adjust the height of the group 2 and therefore the seeding depth.
In prossimità del disco 17 del distributore è dis- Near the distributor disk 17 there is
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CH 675 188 A5 CH 675 188 A5
4 4
posta, in corrispondenza del percorso dei fori, una lama 18 che può scorrere azionata da un motore passo-passo 19. placed, in correspondence with the path of the holes, a blade 18 which can slide operated by a stepper motor 19.
Sempre in corrispondenza del percorso dei fori del disco 17 si trova una fotocellula 20 di tipo noto in grado di verificare, al passaggio di ciascun foro, la presenza o meno di un seme. Always in correspondence with the path of the holes of the disc 17 there is a photocell 20 of a known type capable of checking, at the passage of each hole, the presence or absence of a seed.
La fotocellula 20 è collegata ad una centralina 21, tramite la quale è possibile intervenire sul motore passo-passo 19 per spostare avanti o indietro la lama 18, in modo che questa interferisca più o meno con il percorso dei fori nel distributore e quindi con i semi ad essi aderenti. The photocell 20 is connected to a control unit 21, through which it is possible to intervene on the stepper motor 19 to move the blade 18 forward or backward, so that it interferes more or less with the path of the holes in the distributor and therefore with the seeds adhering to them.
Con questa soluzione si pone in rotazione il disco e si fa arretrare la lama fino a quando la fotocellula 20 rileva la presenza di un seme in corrispondenza di ciascun foro. With this solution the disc is rotated and the blade is moved back until the photocell 20 detects the presence of a seed at each hole.
In questo modo è possibile posizionare la lama in modo tale che quando al foro aderiscono più semi questi, incontrando la lama, vengono leggermenti smossi e quelli superflui ricadono all'interno del serbatoio, mentre uno solo di essi rimane aderente al foro. In this way it is possible to position the blade in such a way that when more seeds adhere to the hole, when they meet the blade, they are slightly moved and the superfluous ones fall back into the tank, while only one of them remains adherent to the hole.
Una differente versione dell'invenzione prevede invece una fotocellula 22 collocata al di sotto del disco 17, in corrispondenza della traiettoria percorsa dai semi durante la caduta. A different version of the invention, on the other hand, provides for a photocell 22 located below the disk 17, in correspondence with the trajectory covered by the seeds during the fall.
Questa soluzione consente il funzionamento automatico dell'apparecchiatura: tramite la fotocellula infatti è possibile contare i semi che cadono dal disco ed elaborare il dato ad intervalli di tempo costanti per mezzo della centralina 21, nella quale inizialmente sono stati immessi i dati richiesti. This solution allows the automatic operation of the equipment: through the photocell, in fact, it is possible to count the seeds that fall from the disk and process the data at constant time intervals by means of the control unit 21, in which the requested data was initially entered.
Qualora i semi caduti siano in numero maggiore o minore di quelli previsti, la centralina azionerà automaticamente in modo noto il motore passo-passo 19, che a sua volta porterà la lama 18 ad interferire in maggiore o minore misura con il percorso dei fori. Un esperto del ramo potrà poi prevedere numerose modifiche e varianti, che dovranno però ritenersi tutte comprese nell'ambito del presente trovato. If the fallen seeds are in greater or lesser numbers than expected, the control unit will automatically operate the stepper motor 19 in a known way, which in turn will cause the blade 18 to interfere to a greater or lesser extent with the path of the holes. A person skilled in the art will then be able to foresee numerous modifications and variations, which however must all be considered to be within the scope of the present invention.
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT8819792A IT1216105B (en) | 1988-03-16 | 1988-03-16 | ELECTRONICALLY CONTROLLED PNEUMATIC SEED DRILL. |
Publications (1)
Publication Number | Publication Date |
---|---|
CH675188A5 true CH675188A5 (en) | 1990-09-14 |
Family
ID=11161251
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH859/89A CH675188A5 (en) | 1988-03-16 | 1989-03-08 |
Country Status (21)
Country | Link |
---|---|
US (1) | US4928607A (en) |
AT (1) | AT397017B (en) |
AU (1) | AU1497788A (en) |
BE (1) | BE1002038A3 (en) |
CH (1) | CH675188A5 (en) |
DE (1) | DE3908665A1 (en) |
DK (1) | DK125189A (en) |
ES (1) | ES1010687Y (en) |
FI (1) | FI891197A (en) |
FR (1) | FR2628595B1 (en) |
GB (1) | GB2217043B (en) |
IT (1) | IT1216105B (en) |
LU (1) | LU87481A1 (en) |
MA (1) | MA21514A1 (en) |
NL (1) | NL8900628A (en) |
NO (1) | NO168742C (en) |
PT (1) | PT90005B (en) |
SE (1) | SE8900903L (en) |
TN (1) | TNSN89037A1 (en) |
YU (1) | YU47306B (en) |
ZA (1) | ZA891898B (en) |
Families Citing this family (40)
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GB8728622D0 (en) * | 1987-12-08 | 1988-01-13 | British Res Agricult Eng | Dibber drills |
GB2243066A (en) * | 1990-04-17 | 1991-10-23 | * Reekie Manufacturing Ltd | Variable speed electro hydraulic drive system for potato planter |
DE9013347U1 (en) * | 1990-09-21 | 1990-11-29 | Rabewerk GmbH + Co, 4515 Bad Essen | Monitoring device for a sowing or drilling machine |
US5301848A (en) * | 1991-10-18 | 1994-04-12 | Conrad Larry M | Electromagnetic meter for closed dispensing container |
DE4234600C2 (en) * | 1992-10-14 | 1994-12-08 | Kleine Franz Maschf | Single grain sowing machine |
FR2697130B1 (en) * | 1992-10-22 | 1994-12-16 | Cemagref | Precision seed drill. |
US5524560A (en) * | 1994-12-09 | 1996-06-11 | The United States Of America As Represented By The Department Of Agriculture | System for controlling vertical displacement of agricultural implements into the soil |
US5598794A (en) * | 1995-02-13 | 1997-02-04 | Fluid Power Industries, Inc. | High accuracy automatically controlled variable linear seed spacing planting apparatus |
US6109193A (en) | 1995-12-29 | 2000-08-29 | Case Corporation | Seed planter apparatus and method |
US6564730B2 (en) | 1995-12-29 | 2003-05-20 | Case Corporation | Seed planter apparatus and method |
US5848571A (en) * | 1996-08-20 | 1998-12-15 | Case Corporation | Seed singulator assembly for a seed metering mechanism |
US6078635A (en) * | 1998-02-05 | 2000-06-20 | Dubois; Jerry | Seed or particle-counting device |
US6044779A (en) * | 1998-04-15 | 2000-04-04 | Case Corporation | Multiple drop seed disc |
US6386127B1 (en) | 2000-02-07 | 2002-05-14 | Case Corporation | Disc opener assembly for a seed planter |
DE102005011004B4 (en) * | 2005-03-02 | 2008-11-06 | Wtk-Elektronik Gmbh | seeder |
SE531269C2 (en) * | 2007-03-05 | 2009-02-10 | Vaederstad Verken Ab | Device for a seed dispensing device on an agricultural machine |
GB0708861D0 (en) * | 2007-05-08 | 2007-06-13 | Univ Copenhagen | Precision seeders |
SE531711C2 (en) * | 2007-06-21 | 2009-07-14 | Vaederstad Verken Ab | Agricultural machine with seed delivery control |
US8850995B2 (en) | 2009-02-02 | 2014-10-07 | Deere & Company | Seeding machine with seed delivery system |
US8850997B2 (en) | 2011-04-25 | 2014-10-07 | Deere & Company | Planter and method of operating a planter with individual meter control |
CN104156765A (en) * | 2014-08-06 | 2014-11-19 | 安徽科技学院 | Seed counting plate adopting adhesive stickers |
US11516959B2 (en) | 2017-07-24 | 2022-12-06 | Precision Planting, Llc | Agricultural trench depth sensing systems, methods, and apparatus |
RU2020138366A (en) * | 2016-07-22 | 2020-12-03 | ПРЕСИЖН ПЛЭНТИНГ ЭлЭлСи | SYSTEMS FOR DETERMINING THE DEPTH OF AGRICULTURAL FURROUND, METHODS AND EQUIPMENT |
US10165724B2 (en) | 2016-10-07 | 2019-01-01 | Crary Industries, Inc. | Potato seed planting apparatus and method of planting potato seed using the apparatus |
CN106886055A (en) * | 2017-02-27 | 2017-06-23 | 吉林大学 | A kind of air-suction seeding unit inhales kind of condition monitoring system and a broadcast leakage monitoring method |
IT201700063111A1 (en) * | 2017-06-08 | 2018-12-08 | Matermacc S P A | Distributor of material for agricultural machinery |
CN109197047B (en) * | 2018-08-02 | 2020-10-23 | 山东省计算中心(国家超级计算济南中心) | Automatic encoder control method suitable for community breeding seeder |
US11564344B2 (en) | 2019-12-24 | 2023-01-31 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11490558B2 (en) | 2019-12-24 | 2022-11-08 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11582899B2 (en) | 2019-12-24 | 2023-02-21 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11516958B2 (en) | 2019-12-24 | 2022-12-06 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11596095B2 (en) | 2019-12-24 | 2023-03-07 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11553639B2 (en) | 2019-12-24 | 2023-01-17 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11553638B2 (en) | 2019-12-24 | 2023-01-17 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11483963B2 (en) | 2019-12-24 | 2022-11-01 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11589500B2 (en) | 2019-12-24 | 2023-02-28 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11564346B2 (en) | 2019-12-24 | 2023-01-31 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11523555B2 (en) | 2019-12-24 | 2022-12-13 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
US11523556B2 (en) | 2019-12-24 | 2022-12-13 | Cnh Industrial America Llc | Particle delivery system of an agricultural row unit |
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DE3430136C1 (en) * | 1984-08-16 | 1986-04-24 | Amazonen-Werke H. Dreyer Gmbh & Co Kg, 4507 Hasbergen | Seed drill |
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DE3541991A1 (en) * | 1985-11-28 | 1987-06-04 | Kleine Franz Maschf | Pneumatic seed-spacing drill |
DE3604628A1 (en) * | 1986-02-14 | 1987-08-20 | Amazonen Werke Dreyer H | PNEUMATIC SINGLE GRAIN MACHINE |
DE3621388A1 (en) * | 1986-06-26 | 1988-01-14 | Amazonen Werke Dreyer H | AGRICULTURAL DISTRIBUTION MACHINE, ESPECIALLY SAEMING MACHINE OR DUAL SPREADER |
DE3625114A1 (en) * | 1986-07-25 | 1988-02-04 | Amazonen Werke Dreyer H | AGRICULTURAL DISTRIBUTION MACHINE |
EP0281761B1 (en) * | 1987-02-12 | 1991-06-12 | Amazonen-Werke H. Dreyer GmbH & Co. KG | Single seeder |
-
1988
- 1988-03-08 AU AU14977/88A patent/AU1497788A/en not_active Abandoned
- 1988-03-16 IT IT8819792A patent/IT1216105B/en active
-
1989
- 1989-03-07 US US07/320,169 patent/US4928607A/en not_active Expired - Lifetime
- 1989-03-08 CH CH859/89A patent/CH675188A5/it not_active IP Right Cessation
- 1989-03-09 GB GB8905420A patent/GB2217043B/en not_active Expired - Fee Related
- 1989-03-13 YU YU51089A patent/YU47306B/en unknown
- 1989-03-13 ZA ZA891898A patent/ZA891898B/en unknown
- 1989-03-14 SE SE8900903A patent/SE8900903L/en not_active Application Discontinuation
- 1989-03-14 FI FI891197A patent/FI891197A/en not_active Application Discontinuation
- 1989-03-14 FR FR898903300A patent/FR2628595B1/en not_active Expired - Lifetime
- 1989-03-15 BE BE8900283A patent/BE1002038A3/en not_active IP Right Cessation
- 1989-03-15 NO NO891126A patent/NO168742C/en not_active IP Right Cessation
- 1989-03-15 DK DK125189A patent/DK125189A/en not_active Application Discontinuation
- 1989-03-15 TN TNTNSN89037A patent/TNSN89037A1/en unknown
- 1989-03-15 AT AT0059889A patent/AT397017B/en not_active IP Right Cessation
- 1989-03-15 NL NL8900628A patent/NL8900628A/en not_active Application Discontinuation
- 1989-03-15 PT PT90005A patent/PT90005B/en active IP Right Grant
- 1989-03-15 MA MA21758A patent/MA21514A1/en unknown
- 1989-03-16 DE DE3908665A patent/DE3908665A1/en not_active Ceased
- 1989-03-16 LU LU87481A patent/LU87481A1/en unknown
- 1989-03-16 ES ES19898900858U patent/ES1010687Y/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US4928607A (en) | 1990-05-29 |
NO891126L (en) | 1989-09-18 |
ES1010687U (en) | 1990-02-16 |
GB2217043B (en) | 1992-05-27 |
AU1497788A (en) | 1988-10-10 |
GB8905420D0 (en) | 1989-04-19 |
SE8900903L (en) | 1989-09-17 |
MA21514A1 (en) | 1989-10-01 |
FR2628595A1 (en) | 1989-09-22 |
IT1216105B (en) | 1990-02-22 |
LU87481A1 (en) | 1989-08-30 |
GB2217043A (en) | 1989-10-18 |
PT90005A (en) | 1989-11-10 |
NO168742B (en) | 1991-12-23 |
FI891197A (en) | 1989-09-17 |
ES1010687Y (en) | 1990-07-16 |
TNSN89037A1 (en) | 1991-02-04 |
NO168742C (en) | 1992-04-01 |
ATA59889A (en) | 1993-06-15 |
NO891126D0 (en) | 1989-03-15 |
YU51089A (en) | 1992-12-21 |
IT8819792A0 (en) | 1988-03-16 |
FR2628595B1 (en) | 1992-01-31 |
YU47306B (en) | 1995-01-31 |
FI891197A0 (en) | 1989-03-14 |
ZA891898B (en) | 1990-03-28 |
DK125189A (en) | 1989-09-17 |
SE8900903D0 (en) | 1989-03-14 |
AT397017B (en) | 1994-01-25 |
DK125189D0 (en) | 1989-03-15 |
BE1002038A3 (en) | 1990-05-29 |
NL8900628A (en) | 1989-10-16 |
DE3908665A1 (en) | 1989-10-19 |
PT90005B (en) | 1994-03-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUE | Assignment |
Owner name: GASPARDO SEMINATRICI S.P.A. |
|
PL | Patent ceased |